Who is happy?
Why are individuals happy?
What are the predictors that distinguishes between the most happy people from the least happy individual?
According to research, there are three factors that seemed to make the most difference regarding individual happiness.
The first is social relationships. People who have close, warm, supportive relationships, that’s by far the number one predictor of happiness.
Number two is having a sense of purpose, having a sense of working toward meaningful goals that you perceive as valuable, meaningful, giving you a sense of purpose. You’re trying to accomplish something outside of yourself.
The third category ‑‑ this is where gratitude comes in ‑‑ is attitudes. Personality traits that are related to really attitudinal approaches to life, things like optimism or pessimism, trust or mistrust as basic dimensions.
Gratitude was one, which from the perspective of history was an important one, that philosophers, theologians, religious traditions all said that a happy person, a person who is fulfilled, deeply so, is one who is grateful.
Source: https://cct.biola.edu/psychology-gratitude-robert-emmons-saying-thanks-makes-happier/